Development of polymer-immobilised acridinium catalyst and its application in photoinduced 1,4-addition to α,β-unsaturated carbonyl compounds

• Published in: Tetrahedron letters Vol. 128; p. 154698
• Main Authors: Umezawa, Misaki, Aoki, Shoji, Okuno, Yoshinori, Sato, Yasuo, Wanibuchi, Kiyofumi, Shoji, Mitsuru
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 19-09-2023
• ISSN: 0040-4039; 1873-3581
• DOI: 10.1016/j.tetlet.2023.154698

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Efficient heterogeneous catalysts for green and sustainable chemistry are in high demand. In this study, a novel polymer-immobilised acridinium salt was developed, and it was found to catalyse the visible-light-induced 1,4-addition of phenylmalononitrile to α,β -unsaturated carboxylic acids. The catalyst was easy to recover after the reaction and was sufficiently robust to maintain its catalytic activity for several uses without a significant decrease in product yield.